Switching relay system



March 25, 1930. R. T. CLOUD 1,751,978

SW1 TCHING RELAY SYSTEM Filed Feb. 4, 1928 E III af/f/axm 2314010 Patented Mar. 2 5, 1930 SWI'IIGHIN G REL AY SYSTEM Application filed February 4, 1928. Serial No. 252,024.

My present invention relates in general to electrical switching means, and more particularly to an electrical switch system adapted to alternately supply current to a plurality of current Operated devices each operation of the system to disconnect the source of current from one of the devices and to cause the source'of current to be connected to another of the devices.

The object of my invention. is to provide relay switching means for controlling the flow of current to two current operated devices, so that one of the devices will be connected to a current source while the other is disconnected from the source by a single closing of a. given control switch and to insure that upon the next succeeding closing of the switch the operative relation of the devices to the current source will be reversed.

The present invention is particularly applicable to the reproduction of music from a phonograph having two electrical pickup means capable of reproducing music from two records alternately and provides means for alternately placing the pickups in contact with the records upon the closing of a single switch, so that the music may be reproduced w from either one of the records.

Other objects and advantages of my present invention will more fully appear from the following detailed description taken in connection with the accompanying drawing, which illustrates a single embodiment there of and in which the single drawing shows schematically a diagram of the arrangement of circuits and elements comprising the pres-- .ent invention and illustrating the same as being used in connection with two pickup devices capable of reproducing music in a phonograph having two records, each on its own rotatable turntable.

In the drawing:-

Like reference characters designate similar arts throughout he several views.

The reference character 10 designates gen erally a switch adapted to be manually operated to. selectively control the operation of electrical pickup devices 11 and 12 cooperable with records 13 and 14 on phonograph turn tables 15 and 16.

and adapted upon v which is associated One contact 17 of the switch 10 is connected by a conductor 18 to one side of a battery 19, the other sideof which is connected by a conductor 20 to a ground connection 21. The other contact 22 of switch 20 is connected by a conductor 23 to a contact member 24 constituting part of a relay designated generally by the reference character 25. The relay 25 includes an electromagnetic coil 26 including a core 27 cooperable with an armature 28, which is adapted to engage a bar 29. The bar 29 is made of insulating material and is adapted to move the contact member 24 upwardly when the coil 26 is energized.

One end of the coil 26 is connected by a conductor 30 to a ground connection 31. The other end of the coil 26 is connected by a conductor 32 to a contact member 33 constituting part of a relay 35, which includes an electromagnetic coil 36.

The contact member 24 of the relay 25 is adapted to alternately cooperate with contact members 34 and 37 In the drawing it is shown as being in engagement with contact member 37. The contact member 37 is connected by a conductor 38 to a contact member 39 comprising part of a relay designated generally by the reference character 40,

which includes an electromagnetic coil 41. One end of this coil 41 is connected by a conductor 42 to a contact member 43 of a relay designated generally by the reference character 45 including an electromagnetic coil 46.

The other contact member 34 associated with member 24 is connected by a conductor. 47 to -a contact 48 of the relay 45. Also connected to the contact member 24 is a conductor 49, which is connected to contact member 50 of relay of this conductor 49 is connectedto contact member 51 of relay 40.

The electromagnetic coil 36 of relay 35 has extending through it a core 52,- one end of with armature 53 adapted to engage and reciprocate an insulating bar 54. One end of the insulating bar 54 has secured to it contact members 55 and 56 of the relay 35. The contact member 55 is adapted to cooperate with contact member 33, and the contact member 56 is adapted to cooperate 45. An intermediate portion with contact member 57. The contact member 55 is connected by a conductor 58 to a switch 59, which is in turn connected to one side of battery 60 by a conductor 61. The other side of the battery 60 is connected by a conductor 62 to a ground connection 63. The contact member 56 is connected by a conductor 64 to contact member 650i relay 40. The contact member 57 is connected by a conductor 66 to one end of electromagnetic coil 41 of relay 40.

Also connected to the insulating bar 54 and movable therewith is a contact member 67, which is connected by a conductor 68 to one side of battery 60 through the single pole switch 59. This contact member 67 is cooperable with contact members 69 and'70 also comprising part of relay 35. The contact member 69 is connected by a conductor 71 to one side of an electrical winding 72 comprising part of the electrical pickup device 11. The other side of the electrical winding is connected to a conductor 7 3, which termiates in a ground connection 74. Connected to an intermediate portion of the conductor 71 is a conductor 75, which isconnected to one side of a filament lamp 76, the other side of which is connected to a ground connection 77. Thus, it will be evident that when current is flowing through coil 72, the lamp 76 will be lit.

The contact member 70 is connected by a conductor 78 to one end 79 of an electrical winding 80 comprising part of the pickup device-12. The other side of the winding 80 is connected by a conductor 81 to a ground connection 82. Also connected to the conductor 78 is a conductor 83, which is connected to one side of a filament lamp 85, the other side of which is connected to a ground connection 84. This arrangement results in the lamp 85 being lit whenever current is flowing through the winding 80.

One side of the winding 36 comprising part of relay 35 is connected by a conductor 86 to the battery 60 through the switch 59. The

i other side or end of the coil 36 is connected to the conductor 64.

The contact member 39 of the relay 40 is cooperable with a contact member 88, which is connected to one end of a conductor 89, the other end of which is connected to one side of coil 41. Extending through the coil 41 is a core 90 cooperable with an armature 91 adapted to engage a bar of insulating material 92 coperable withcontact member 51. Obviously, when the coil 41 is energized, the bar 92 is moved upwardly so as to move contact member 51 into cooperation with contact member 88 and to disengage the contact member 88 from the contact member 39. Also connected to an intermediate portion of the insulating bar 92 is a contact member 94 cooperable with a contact member 95, both of which constitute parts of the relay 40. The

contact member 94 is connected by a conductor 96 to a ground connection .97. The contact 95 has secured to it one'end of conductor 98, the other end of which is secured to one side of the coil 46 comprising part of relay 45.

The electromagnetic coil 46 of relay 45 has extending through it a core 99 cooperable with an armature 100, which is adapted to reciprocate a bar of insulating material 101. One end of this bar 101 is adapted to engage contact member 50 when the coil is energized to move the contact member 50' into engagement with a contact member 102 and to move the contact member 102 out of cooperation with contact member 48. The contact member 102 is connected by a conductor 103 to a side of the coil 46. Also connected to an intermediate portion of the bar 101 is a contact member 104 cooperable with contact member 43. This contact member 104 is adapted to be moved out of cooperation with the contact member 43 when the coil 46 is energized. Also it is to be noted that the contact member 104 is connected by a conductor 105 to a, ground connection 106. I

Attention is directed to the fact that I have shown a number of ground connections to indicate common return wires to the batteries and hence it is not to be inferred that such connections are essential in themselves in order to render the circuits shown operative. I find that by using these ground connections instead of common return Wires that the de- ECIEPtlOIl of the invention is greatly simpli- As previously pointed out the reference characters 11 and 12 designate generally a with phonograph records 13 and 14 on turntables 15 and 16. The turntables may be rotated by any suitable or conventional mechanism. The circuit arrangement which I have disclosed as being connected tothese pickup devices permits of them to be alternately lowered into cooperation with the associated records upon each operation of the switch 10, as will be more fully explained hereinafter.

The operation of my novel switching system is briefly as follows:

Before proceeding with the description of the actual operation of my novel switch system, I shall describe briefly the operation of each of the coils of the relays 25, 35, 40, and 45. Upon the energization of coil 26, the contact member 24 is moved upwardly out of engagement with contact member 37 and into engagement with contact member 34. When the coil 36 is energized, it actuates the bar 54 to move contact member 67 out of engagement with contact member and into engagement with contact member 69, and to move contact members 55 and 56 into engagement with contact members 33 and 57. The energizing of coil 41 of relay 40 results in a pair of electrical pickup devices cooperable prior to the latter-member breaking contact complished by simply with member 39. Also when coil 46 of relay is energized, it results in the upward movement of bar 101, thus moving contact mem ber 104 out of engagement with member 43 and'movi-ng contact member into engagement with contact member 102 just prior to the latter member being moved out of engagement with contact member .48.

After the pickup devices 11 and 12 have been placed in operative position relative to the records 13 and 14, the switch 59 is closed to connect the battery 6O'to the relay circuits above described. This operation results in the energizing of the coil 80 of pickup device 12, which coil acts to allow the pickup device to be lowered into playin engagement with the record 14. It will, 0% course, be understood that although pickup device 11 is disposed in an operative position relative to the record 13, still it is held out of playing engagement with the record by suitable mechanism not disclosed herein until a subsequent energizationof coil 72.

Now when it is desired to energize coil 72 of picku device 11 and to de-energize coil 80 of pickup device 12, the same may be acclosing the switch 10. A subsequent closing of this switch, however. Will result in the energization of coil 80 and in the de-energization of coil 72. That is to say, subsequent operations; of switch 10 results in the pickup coils being alternately energized and de-energized, thus permitting of an alternate and selective reproduction of the music on the records 13 and 14. These results are accomplished through the action of the relays 25, 35, 40, and 45 which will now be more fully described.

' With the relay mechanism in the positions shown the closing of switch 10 results in the flow of current from battery 19 through conductor 23, contact members 24 and 37 of relay 25, conductor 38, contact members 39 and 88, conductor 89, coil 41 of relay 40, and to the ground connection 106 through conductor 42 and contact members 43 and 104. Obviously, the energizing of coil 41 of relay 40 operates the-insulating bar 92 to move contact member 94 out of contact with member 95 and into engagement with member 65 and at the same time moves contact member 51 into engagement with contact member 88 just prior to the breaking of the engagement between contact members 39 and 88. It is to be noted, however, that the coil 41 remains energized even though contact members 39 and 88 are sepa rated, due to the flow of current through conductor 49 connected to conductor 23. That is to say, when the member 51 makes contact w th member 88, they form a path in shunt with members 37 and 24, so that the coil 41 is held energized so long as the switch 10 remains closed, and thus prevents fluttermg of the relay 40.

By moving contact member 94 into engagement with contact member 65, the current is caused to flow from battery through coil 36 of relay 35 through conductor 64, and the contact members and 94 to the ground connection 97. This results in the energizing of co l 36 of the relay 35.

C011 36 in turn raises bar 54 to move contact member 67 out of cooperation with member and into engagement with member 69 and to move contact members 55 and 56 into engagement with members 33 and-57.

he engaging of member 33 allows current to flow from battery 60 through the coil 26 of relay 25, thus energizing coil 26. Moreover, the engaging of member 57 by member 56 will cause the coil 36 of relay 35 to remain energized after the switch 10 has been opened, and the coil 41 of relay 40 de-energized. That is to say, when the switch 10 is opened, members 65 and 94 will be separated thus preventing the flow of current from battery 60 to the ground connection 97. The current, however, will flow from battery 60 through conductor 86, coil 36, conductor 64, members 56 and 57, conductors 66 and 42, contact members 43 and 104, to the ground connection 106. This means that coil 36 will remain energized when the switch 10 has been opened as long as contact member 43 is in engagement with contactmember 104 of relay 45. Subsequent operation of the switch 10, as will be more fully explained hereinafter, will result in the energization of coil 46 of rela 45, thus causing members 43 and 104 to be operated and thereby resulting in the deenergization of coil 36.

It will, of course, be noted that as long as the coil 36 of relay 35 remains energized, coild26 of relay 25 will also remain energize The energizing of coil 26 of relay 25 causes bar 29 to be moved upwardly, breaking the engagement between members 24 and 37 and causing member 24 to engage member 34. Attention, however, is directed to the fact thatcoil 46 of relay 45 will not be energized during this operation of switch 10 due to the fact that contact member 94 has been moved out of engagement with contact mem ber 95 by the energized coil 41.

The moving of contact member 67 out ofengagement with contact member 70 and into engagement with contact member 69 results in the de-energization of coil 80 and the energization of coil 72, whereby pickup device 11 is lowered into playing engagement with record 13. Of course, it is to be under= by member 55 v stood that upon the de-energization of coil pickup device 12 may be removed from engagement with record 14. From the drawing it will be evident that the battery 60 supplies the current for alternately energlzing the two coils 72 and 80. The energ zing of coil 72 and the deenergizing of coil 80 also results in lamp 76 being lit and in lamp being put out. This is accomplished due to the fact that lamp 76 is in parallel with coil 72 and lamp 85 is in parallel with coil 80. These lamps are disposed in a visible position adjacent the turntables 15 and .16 and function to indicate which of the two pickup devices 11 and 12 is in playing engagement with a record.

The opening of the push-button switch 10, as previously pointed out, causes the deenergization of the coil 41 of relay 40 but does not de-energize the coils of relays 25 and 35. This means that the coil 72 of pickup device 11 will remain energized and the coil 80 ot the pickup device 12 will remain deenergized until a subsequent operation of switch 10.

Now if the push-button switch is again operated current flows from battery 19 through contact members 24 and 34, the conductor 47, the contact members 48 and 102, the conductor 103, the coil 46 of relay 45, the conductor 98, the contact members 95 and 94 of relay 40, to the ground connection 97. This results in the energization of coil 46 which operates to break the connection between members 43 and 104 and to establish a connection between contact members 50 and 102 as well as to break the connection between members 48 and 102. It will be noted that member 50 engages member 102 just prior to the breaking of contact between member 48 and member 102. By disconnecting the members 43 and 104 the circuit from battery 60 through the relay coil 36 to ground is opened, thus resulting in a de-energization of the coil 36. Obviously, if coil 36 is deenergized, coil 26 of relay 25 will also be de-energized, thereby putting the relays 25 and 35 in the positions shown in the draw ing. Attention is directed to the fact that even though contact members 48 and 102 are separated, still the coil 46 will remain energized due to the shunt connection established by conductor 49 between the coil 46 and the contact members 24 and 34. In other Words, the coil 46 will remain energized as long as the switch 10 is in a closed position. The de-energizing of the coil 36 of relay 35 results in contact member 67 being moved out of engagement with contact member 69 back into contact with member 70. The battery 60 will then be connected 'to coil 80 and will serve to energize the coil 80. By disconnecting the member 69 from member 67 the coil 72 is tie-energized. Also this operation of relay 35 acts to darken the lamp 76 and to cause the lighting of lamp 85.

The subsequent opening of switch 10 deenergizes the coil 46 of relay 45 and as a result. places the relays back in the position shown in the drawing. When it is desired to disconnect the source of energy from the circuit associated with the pickup devices 11 and 12, the same may be accomplished by opening switch 59.

Now, of course, it is to be understood that although I have illustrated and described in detail the preferred form of my invention, the invention is not to be thus limited, but only in so tar as defined by the scope and spirit of the appended claims.

I claim as my invention:

1. In an electrical switching system, electricalenergy means, a pair of current operated devices adapted to be alternately connected to said means, a plurality of electrical relays, each including an electromagnetic coil associated with said devices and said energy means, the coil of one of said relays being adapted when energized to cause the energization of the coils of the other relays, an additional electrical relay including an electromagnetic coil adapted when energized to cause the de-energization of the electromagnetic coils of the other relays, and a switch for alternately operating said plurality of relays and said additional relay so as to cause said relays to alternately connect the energy means to said pair of devices, whereby said devices are alternately energized.

2. In an electrical switching system, electrical energy means, a pair of current operated devices adapted to be alternately connected to said means, a plurality of electrical relays, each including an electromagnetic coil associated with said devices and said energy means, the coil of one of said relays being adapted when energized to cause the energization of the coils of the other relays, an additional electrical relay including an electromagnetic coil adapted when energized to cause the de-energization of the electromagnetic coils of the other relays, and a switch for alternately operating said plurality of relays and said additional relay so as to cause said relays to alternately connect the energy means to said pair of devices, whereby said devices are alternately energized, one of said relay coils being adapted to remain energized after a given operation when said switch is opened, whereby the device energized will remain energized until the next operation of said switch.

3. In an electrical switching system, electrical energy means, a pair of current operated devices adapted to be alternately conne'cted'to said means, a plurality of electrical relays, each including an electromagnetic coil flSSOClfitEd with said devices and said energy means, the coil of one of said relays ity of electrical relays said relays to alternately connect being adapted when energized to cause the energization of the coils of the other relays, an additional electrical relay including an electromagnetic coil adapted when energized to cause the de-energization of the electromagnetic coils of the other relays, and a switch for alternately operating said plurality of relays and said additional relay so as to cause said relaysto alternately connect the energy means to said pair of devices, whereby said devices are alternately energized, said coil of the additional relay upon being energized being caused to remain so until said switch has 4. In an electrical trical energy means, 'ated devices adapted been opened. switching system, eleca pair of current operto be alternately connected to said means, a plurality of electrical relays, each including an electromagnetic coil associated with said devices and said energy means, the coil Ofone of said relays being adapted when energized to cause the energization of the coils of the other relays, an additionalelectrical relay including an electromagetic coil adapted when energized to cause the de-energization of the electromagnetic coils of the other relays, and a switch for alternately operating said plurality of relays and said additional relay so as to cause we energy means to said pair of devices, whereby said devices are alternately energized, said coil of the additional relay being adapted when energized to cause said above mentioned relay coil of said relays to become de-energized, whereby the other relay coils of said plurality of relays are also de-energized.

5. In an electrical switching system, electrical energy means, a plurality of electrical current devices designed for alternate operation, electromagnetic means for alternately connecting said devices to said energy means, and a switch associated with said energy means and said electromagnetic means for controlling the operation of said electromagnetic means, said electromagnetic means including a plurality of relays arranged in such a manner as to cause the alternate energization and de-energization of said devices upon each successive operation of said switch.

6. In an electrical switching system, electrical energy means, a plurality of current operated devices designed for alternate operation and adapted to be connected to said means for alternate energization, a pluralfor controlling the en-= ergization of said devices, and a switch for controlling the operation of said electrical means, said electrical relays being connected to each other and to said devices in'* such a manner as to cause the alternate energization of said devices upon each successive operation of said switch, one-of said electrical relays being adapted upon a givenoperation of said switch to render the other relays inscr1bed Illinois.

RAYMOND T. CLOUD.

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